L-VALINE-13C5, 15N is an essential amino acid and one of 20 proteinogenic amino acids,it is cannot be manufactured by the body and must be acquired through diet or supplementa tion.L-VALINE-13C5, 15N is found in grains, dairy products,mushrooms, meats, peanuts and soy proteins,it has been used in studies to attenuate arrhythmias and induce hypotensive effects.